The weight of a US quarter coin depends on its minting date:
- Quarters minted since 1965 (clad coins): weigh 5.670 grams.
- Quarters minted between 1932 and 1964 (silver coins): weigh 6.25 grams.
- Earlier quarters (prior to 1932) had varying weights, often heavier than the later versions due to different metal compositions, such as silver content and the Coinage Acts that influenced their weight.
What if my quarter weighs 5.5 grams?
From my experience, The Spec weight for a quarter is 5.67 grams and the tolerance range is +/- . 227grams. So that means that a quarter is within the allowed range as long as the weight is between 5.443 and 5.897 grams. So your quarter is considered to be perfectly normal.